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Marking Crayons for Grade Mark Readers

When making marks on rough surfaces for construction projects, manufacturing projects or crafting, use a smear-resistant, highly visible lumber or marking crayon. These crayons last under tough conditions, go on clearly even when the surface is wet, and are ideal for use with grade mark readers. Many auto shops also find them handy when marking parts or tires for repair. These crayons are large, and boxes come by the dozen.

Lumber and Marking Crayons

Lumber crayons are typically clay-based, and each mark lasts for a very long time. These are generally for marking lumber, but work equally well on steel, concrete, ceramic and paper. When these crayons mark lumber for a grade mark reader, they greatly reduce the number of misread marks and mistakes. Marking crayons are generally vegetable oil-based, and are useful for marking layouts for cutting material and color-coding pieces for identification. These crayons mark easily on dirty surfaces, such as older tires, and include crayons with fluorescent color that shows up under UV or black light.

Visible, No-Smudge Markings

Lumber and marking crayons come in multiple colors for optimal visibility, including white, black, orange and yellow. While they last and won't easily smudge, they don't penetrate the materials used, so the materials are not compromised in the long term. They easily glide onto lumber or surfaces that don't typically allow for marking, making layout planning or identification much easier. Use brighter colors for darker surfaces, and fluorescent-based colors for tires or dark rubber.